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Finding the Fourth Proportional to 30,219.88, 41,691.78 and 22,280.92

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Solution

The fourth proportional to 30,219.88, 41,691.78 and 22,280.92 is: 30,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.88 : 41,691.78 = 22,280.92 : x
  2. Step 2: Convert to fraction form
    30,219.88/41,691.78 = 22,280.92/x
  3. Step 3: Cross multiply
    30,219.88x = 41,691.78 × 22,280.92
  4. Step 4: Simplify right side
    30,219.88x = 928,931,214.84
  5. Step 5: Solve for x
    x = 928,931,214.84/30,219.88
  6. Step 6: Final answer
    x = 30,739.08

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.